130,561 research outputs found
Novel records and observations of the barnacle<i>Stephanolepas muricata</i>(Cirripedia: Balanomorpha: Coronuloidea); including a case for chemical mediation in turtle and whale barnacles
No full textFrick, Michael G., Zardus, John D., Ross, Arnold, Senko, Jesse, Montano-Valdez, Dulce, Bucio-Pacheco, Marcos, Sosa-Cornejo, Ingmar (2011): Novel records and observations of the barnacle Stephanolepas muricata (Cirripedia: Balanomorpha: Coronuloidea); including a case for chemical mediation in turtle and whale barnacles. Journal of Natural History 45 (11-12): 629-640, DOI: 10.1080/00222933.2010.534563, URL: http://dx.doi.org/10.1080/00222933.2010.53456
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Figure 1 in Novel records and observations of the barnacle Stephanolepas muricata (Cirripedia: Balanomorpha: Coronuloidea); including a case for chemical mediation in turtle and whale barnacles
No full textFigure 1. Stephanolepas muricata oblique latero-carinal view. Diameter at apical margin = 5 mm.Published as part of Frick, Michael G., Zardus, John D., Ross, Arnold, Senko, Jesse, Montano-Valdez, Dulce, Bucio-Pacheco, Marcos & Sosa-Cornejo, Ingmar, 2011, Novel records and observations of the barnacle Stephanolepas muricata (Cirripedia: Balanomorpha: Coronuloidea); including a case for chemical mediation in turtle and whale barnacles, pp. 629-640 in Journal of Natural History 45 (11-12) on page 630, DOI: 10.1080/00222933.2010.534563, http://zenodo.org/record/520333
Figure 3 in Novel records and observations of the barnacle Stephanolepas muricata (Cirripedia: Balanomorpha: Coronuloidea); including a case for chemical mediation in turtle and whale barnacles
No full textFigure 3. Scanning electron micrograph of radius between lateral plates of Stephanolepas muricata.Published as part of Frick, Michael G., Zardus, John D., Ross, Arnold, Senko, Jesse, Montano-Valdez, Dulce, Bucio-Pacheco, Marcos & Sosa-Cornejo, Ingmar, 2011, Novel records and observations of the barnacle Stephanolepas muricata (Cirripedia: Balanomorpha: Coronuloidea); including a case for chemical mediation in turtle and whale barnacles, pp. 629-640 in Journal of Natural History 45 (11-12) on page 635, DOI: 10.1080/00222933.2010.534563, http://zenodo.org/record/520333
Biological effects of airborne pollutants released during cement production assessed with lichens (SW Slovakia)
No full textIn this paper we investigated the biological effects of airborne pollutants released during cement production by means of epiphytic lichens (SW Slovakia). We assessed the effects of dust pollution on lichen diversity around a limestone quarry (on the quarry-facing and the opposite side of Fagus sylvatica boles) and the content of selected elements in samples of the lichen Xanthoria parietina collected around a cement mill, two quarries and urban and rural sites at increasing distance from the sources of pollution. Dust contamination from limestone quarrying affected lichen diversity within a distance of 350 m from the source. Approaching the quarry, the diffusion of basi-nitrophilous species, the decrease of acidophilous species and the asymmetrical distribution of lichens on the tree boles, with a higher coverage of basiphilous species in the side facing the source of dust were observed. These responses, based on the functional traits of the lichen diversity, are helpful in monitoring studies around similar sources of pollution. In samples of X. parietina collected around the quarries and the cement mill, Ca, Ti, Fe, V, Al and Ni were significantly higher than in the surrounding environment. Calcium was a good tracer for dust contamination around the quarries and the cement plant and a clear decrease in its content with increasing distance from the source was found, with normal values reached within 1700 m from the cement mill. Lichens can be successfully used as indicators to integrate instrumental monitoring networks, when air pollution from cement factories is concerned. (C) 2014 Elsevier Ltd. All rights reserved
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Scholarly Communication and Publishing Lunch and Learn Talk #11: The ULS Open Access Author Fee Fund
No full textAt the May 2014 talk, you will learn about the ULS Open Access Author Fee Fund--what it is, why we do it, how it works, and how the program is going so far
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